JPH049838A - Photographic base - Google Patents
Photographic baseInfo
- Publication number
- JPH049838A JPH049838A JP11455790A JP11455790A JPH049838A JP H049838 A JPH049838 A JP H049838A JP 11455790 A JP11455790 A JP 11455790A JP 11455790 A JP11455790 A JP 11455790A JP H049838 A JPH049838 A JP H049838A
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- resin
- polyamine
- polyamide
- beating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 37
- 238000010009 beating Methods 0.000 claims abstract description 25
- 239000013055 pulp slurry Substances 0.000 claims abstract description 12
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 11
- 238000000576 coating method Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004952 Polyamide Substances 0.000 abstract description 4
- 238000007765 extrusion coating Methods 0.000 abstract description 4
- 229920002647 polyamide Polymers 0.000 abstract description 4
- 230000008961 swelling Effects 0.000 abstract description 4
- 229920000768 polyamine Polymers 0.000 abstract 3
- 239000002002 slurry Substances 0.000 abstract 2
- 239000000523 sample Substances 0.000 description 21
- 239000002585 base Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000003623 enhancer Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 229910001864 baryta Inorganic materials 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013054 paper strength agent Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- YALHCTUQSQRCSX-UHFFFAOYSA-N sulfane sulfuric acid Chemical compound S.OS(O)(=O)=O YALHCTUQSQRCSX-UHFFFAOYSA-N 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
本発明は、表面の平滑性がすぐれた写真用支持体に関す
るものである。The present invention relates to a photographic support with excellent surface smoothness.
写真用支持体には、外観および画像の解像性の点から、
印刷用紙等のいわゆる一般紙とは比較にならない程高度
な平滑性が求めらオｌでいる。最近の写真用支持体は、
原紙層へ、の処理液の浸透を防止（１５、迅速な現像処
理を可能（こするため、原紙の両面をポリオレノイン等
の樹脂で被覆するよ〕にな）どきでいる。この種の写真
用支持体を使用ｊ。
た印画紙は、従来のバライタ紙の場合と異なり、現像後
に乾燥号−る際、鏡面を転写するフＬロタイブ処理を行
わないため、写真用支持体の平滑性がそのまま現像乾燥
後の印画紙の平滑性に反映される。
子連の、）うに、この種の写真用支持体では、原紙の両
面に均一な厚さのポリオレノイン等の樹脂を押しだし塗
工機等で塗工することにより得られるもの”Ｃあるため
、原紙の平滑性の影響を強く受ける１、シたか−）で、
従来のバライタ紙より高い原紙の）Ｖ−市外が要求され
ている。原紙の平滑性を向上させるための技術と（−で
は、特開昭５８〜６８０３７’ｑ１特開昭６２−５４２
５２号公報等に開示されているように、原紙に用いるパ
ルプの繊維長分布をある範囲内に調節する方法や、特公
昭５９−４２２９５号公報に開示されているような、パ
ルプの光学特性を規定する方法が知られている。
一方、叩解後のパルプスラリーにカチオン性のポリアミ
ド−ポリアミン−エピクロルヒドリン樹脂を添加し、写
真用支持体を製造することは、特開昭５９−１２５７３
１号、特開昭５５−２１０７４号公報等に開示されてい
るように、湿潤強度の改良を目的として従来から試みら
れている。In terms of appearance and image resolution, photographic supports are
A high degree of smoothness is required, which is incomparable to so-called general paper such as printing paper. Recent photographic supports are
It prevents the processing liquid from penetrating into the base paper layer (15, and enables rapid development (for rubbing, both sides of the base paper are coated with a resin such as polyolenoin). For this type of photography. Unlike conventional baryta paper, photographic paper that uses a support does not undergo a floatation process to transfer a mirror surface when drying after development, so the smoothness of the photographic support remains as it is. This is reflected in the smoothness of the photographic paper after development and drying.In this type of photographic support, resin such as polyolenoin is extruded to a uniform thickness on both sides of the base paper and coated with a coating machine. Because there is something obtained by coating, it is strongly affected by the smoothness of the base paper.
A higher V-rate of base paper than conventional baryta paper is required. Techniques for improving the smoothness of base paper (-)
As disclosed in Japanese Patent Publication No. 52, etc., there is a method of adjusting the fiber length distribution of pulp used for base paper within a certain range, and as disclosed in Japanese Patent Publication No. 59-42295, there is a method of adjusting the optical properties of pulp. There are known methods for specifying this. On the other hand, manufacturing a photographic support by adding a cationic polyamide-polyamine-epichlorohydrin resin to pulp slurry after beating is disclosed in Japanese Patent Application Laid-Open No. 59-12573.
As disclosed in Japanese Patent Laid-Open No. 55-21074, attempts have been made to improve wet strength.
前述のように、原紙の両面をポリオレフィン等の樹脂で
被覆した写真用支持体の平滑性を向上させる目的で種々
の試みがなされているが、これらいずれの方法によって
も、目的とした良好な平滑性の写真用支持体は得られな
かった。すなわち、本発明は原紙の両面をポリオレフィ
ン樹脂で被覆した、平滑性のすぐれた写真用支持体を提
供することを目的とする。As mentioned above, various attempts have been made to improve the smoothness of photographic supports in which both sides of base paper are coated with resin such as polyolefin, but none of these methods has been able to achieve the desired smoothness. No suitable photographic support was obtained. That is, an object of the present invention is to provide a photographic support with excellent smoothness in which both sides of a base paper are coated with a polyolefin resin.
本発明者らは上記課題を解決するため、写真用支持体の
製造各工程での平滑性の変化を解析した結果、ポリオレ
フィン樹脂の押しだし塗工時に、約３００℃の溶融樹脂
が原紙表面に接触する際、表面が不均一に収縮すること
に起因する平滑性の低下が、押し出し塗工前の原紙の平
滑性にも増して重要であることを見いだした。さらに、
この押し出し塗工時の表面の収縮を減少させるためには
、熱硬化性の樹脂であるポリアミド−ポリアミン−エピ
クロルヒドリン樹脂をパルプスラリーに添加した後、叩
解して製造した原紙を使用することが最も効果のあるこ
とを見いだし、本願発明を完成するに至った。その理由
としては、叩解によりパルプ繊維壁が緩むと同時に、水
が圧入されて膨潤する際、ポリアミド−ポリアミン−エ
ピクロルヒドリン樹脂が存在すると、水とともに繊維壁
内に圧入され、叩解により新たに生じた表面に定着する
。さらに、乾燥に際して、ポリアミド−ポリアミン−エ
ピクロルヒドリン樹脂はこれら繊維壁内の表面間に不可
逆的な結合を形成するため、その後の温度あるいは水分
率変化による、繊維の幅方向での膨潤や収縮が少なくな
ると考えられる。
本発明で使用するパルプとしては、ＮＢＫＰ。
ＬＢＫＰ、ＮＢＳＰＳＬＢＳＰ、各種非木材パルプなど
が挙げられる。ポリアミド−ポリアミン−エピクロルヒ
ドリン樹脂を添加する前のパルプは、未叩解の状態であ
っても目的とした叩解度に満たない状態であっても構わ
ない。ただし、ポリアミド−ポリアミン−エピクロルヒ
ドリン樹脂添加後の叩解では、濾水度を２００ ｍ１以
上低下させることが好ましい。
また、本発明で使用するポリアミド−ポリアミン−エピ
クロルヒドリン樹脂は、湿潤紙力増強剤として一般によ
く知られているものであり、例えば特開昭４９−１０９
６１７号、特開昭４９−１０９６１７号、特開昭５０−
５９４９２号、特開昭５４−５９４１６号公報等に開示
されているものである。
本発明のポリアミド−ポリアミン−エピクロルヒドリン
樹脂の添加量としては、パルプに対する重量パーセント
で０．１以上、３．０以下であることが好ましい。添加
量０．１重量パーセント未満では十分な平滑性向上効果
が得られず、３． ０重量パーセントを越える場合には
、それ以上の平滑性が得られないのみならず、損紙を回
収する際の離解性が著しく悪化するため好ましくない。
本発明のポリアミド−ポリアミン−エピクロルヒドリン
樹脂を添加したパルプを叩解する叩解機としては、通常
パルプの叩解に使用する叩解機、例えばビータ−、コニ
カルリファイナー、ディスクリファイナ−などを使用す
ることができる。その際、繊維の切断を少なくし、繊維
の膨潤を促進するような叩解条件が好ましい。
本発明の写真用支持体の原紙には、カブリ防止剤、染料
、填料、サイズ剤、定着剤、乾燥紙力増強剤などを必要
に応じて含有するものである。なお、必要に応じて湿潤
紙力増強剤を本発明の方法に加え、叩解後のパルプスラ
リーに添加しても差し支えない。さらに、各種澱粉、ポ
リビニルアルコ・−ル、ゼラチン等による表面処理、お
よびぼう硝、塩化ナトリ１クム、塩化°ア′ルーニウム
、有機導電剤等による帯電防１１、処理を必要に応じて
原紙上に行うこともｉＥＪ能゛こある。
本発明のポリ号し・−ノイ゛、／樹脂とし、では、６丁
−ヂ・レン、プロピＬ／ン等のα−詞しパフィニ／のホ
モポリマ、あるいは２種類以１−のα−オＬ／フィンか
ら成る共重合体またはα−第１／フインを１．成分と（
、て、それとＪｉ、重合可能な他のモノンーとの共重合
体、およびそれらの混合物を用いることが出来る。これ
らの樹脂！、Ｔ、、 二酸化チタン、アルミナ、炭酸カ
ルシウム等の白色顔料や着色顔料を添加すること、通鹿
樹脂に混合さ４する安定化剤、酸化防止剤、分散剤、滑
剤等を添加することも差Ｉ５．支λない、。
本発明のポリオレフィン樹脂被覆写真用支持体は、走行
する原紙１−に加熱溶融し、た樹脂を流延する、いわゆ
る押り、 ｔｆ、 Ｌ塗工法によ−）て製造される。
本発明による平滑性の４″ぐれた写真用支持体は、カラ
ー印画紙用紙、白黒印画紙用紙、写植印画紙用紙、複写
印画紙用紙、製版用印画紙等に使用４゛る、−とができ
る。
［（’）用】
本発明の、パルプスラリーにポリｒミドーポリｊ′ミン
〜＝エビク「疋ルヒドリン樹脂を添加した後、叩解ｊ、
て製造しまた原紙では、パルプ繊維壁内部表面をポリｆ
ミドーポリｒミン〜エピクロルヒドリ゛、２・樹脂で加
Ｊｃきるため、熱や水分変化によるパルプ繊維の膨潤や
収縮が抑えられる４、したがって、ポリ、ｔ’ Ｌ／−
ｙイン樹脂を押しだ（２，塗工時の平滑性の悪化が少な
く、＼１１滑性のすぐれた写真用支持体が得られる。In order to solve the above problem, the present inventors analyzed the changes in smoothness during each manufacturing process of photographic supports, and found that during extrusion coating of polyolefin resin, molten resin at about 300°C comes into contact with the surface of base paper. It has been found that the decrease in smoothness due to non-uniform shrinkage of the surface is more important than the smoothness of the base paper before extrusion coating. moreover,
In order to reduce surface shrinkage during extrusion coating, it is most effective to use base paper produced by adding polyamide-polyamine-epichlorohydrin resin, a thermosetting resin, to pulp slurry and then beating it. They have discovered something and have completed the present invention. The reason for this is that when the pulp fiber wall is loosened by beating and at the same time water is forced in and swells, if the polyamide-polyamine-epichlorohydrin resin is present, it is forced into the fiber wall along with water, and the surface newly created by beating is to take root. Furthermore, during drying, the polyamide-polyamine-epichlorohydrin resin forms irreversible bonds between the surfaces within these fiber walls, which reduces swelling and shrinkage in the width direction of the fibers due to subsequent changes in temperature or moisture content. Conceivable. The pulp used in the present invention is NBKP. Examples include LBKP, NBSPSLBSP, and various non-wood pulps. The pulp before adding the polyamide-polyamine-epichlorohydrin resin may be in an unbeaten state or in a state that does not have the desired degree of beating. However, in the beating after addition of the polyamide-polyamine-epichlorohydrin resin, it is preferable to reduce the freeness by 200 ml or more. Furthermore, the polyamide-polyamine-epichlorohydrin resin used in the present invention is generally well known as a wet paper strength enhancer, for example, as disclosed in Japanese Patent Application Laid-open No. 49-109.
No. 617, JP-A-49-109617, JP-A-50-
59492, Japanese Unexamined Patent Publication No. 54-59416, etc. The amount of the polyamide-polyamine-epichlorohydrin resin of the present invention added is preferably 0.1 or more and 3.0 or less in weight percent relative to the pulp. If the amount added is less than 0.1% by weight, a sufficient effect of improving smoothness cannot be obtained; 3. If it exceeds 0 weight percent, it is not preferable because not only no further smoothness can be obtained, but also the disintegration properties when recovering waste paper are significantly deteriorated. As a beating machine for beating the pulp to which the polyamide-polyamine-epichlorohydrin resin of the present invention is added, a beating machine normally used for beating pulp, such as a beater, a conical refiner, a disc refiner, etc., can be used. At that time, beating conditions are preferable to reduce fiber breakage and promote fiber swelling. The base paper of the photographic support of the present invention contains an antifoggant, a dye, a filler, a sizing agent, a fixing agent, a dry paper strength enhancer, etc., as necessary. Note that, if necessary, a wet paper strength enhancer may be added to the method of the present invention and added to the pulp slurry after beating. Furthermore, the base paper is subjected to surface treatment with various starches, polyvinyl alcohol, gelatin, etc., and antistatic treatment with sulfur sulfate, 1 cum of sodium chloride, aluminum chloride, organic conductive agents, etc., as necessary. There are many things iEJ can do. The poly-resin of the present invention is a homopolymer of the α-word Puffini/ such as 6-di-lene, propylene, etc., or a homopolymer of two or more types of α-O-L. A copolymer consisting of /fin or α-first /fin 1. Ingredients and (
, copolymers of it with Ji, other polymerizable monones, and mixtures thereof can be used. These resins! ,T,, It is also possible to add white pigments or colored pigments such as titanium dioxide, alumina, calcium carbonate, etc., or to add stabilizers, antioxidants, dispersants, lubricants, etc. mixed with the Tsuka resin. I5. I can't help it. The polyolefin resin-coated photographic support of the present invention is manufactured by the so-called press coating method, in which a resin is heated and melted onto a running base paper 1 and then cast. The photographic support with a smoothness of 4" according to the present invention is used for color photographic paper, black and white photographic paper, typesetting photographic paper, copying photographic paper, photographic paper for plate making, etc. [For (')] After adding the polyhydrin resin to the pulp slurry of the present invention, the pulp slurry is beaten,
The inner surface of the pulp fiber wall is coated with poly-F.
Midopolymer~Epichlorohydrin, 2. Since the resin can be added to Jc, the swelling and shrinkage of pulp fibers due to heat and moisture changes can be suppressed. 4. Therefore, poly, t' L/-
y-in resin is extruded (2) There is little deterioration of smoothness during coating, and \11 a photographic support with excellent lubricity is obtained.
【実施例］
以トでは、本発明を実施例により訂細に説明する。７な
お、本発明は実施例に限定されるものではない。以ドに
おｉＪる部、％は４べで重量によるものである。
実施例１
Ｌ Ｂ Ｋ ［３とＮ［拠ＳＰが重量比で°７：３の混
合パルプ１００ ｆｆ１Ｋに、ボリア；ド＝ボリアミン
ーユ°ビクロルヒドリン樹脂（カイメン５２５９、ディ
ックハーキコし／ス社製）を有効成分と（、ｒＯ，５０
％添加後、パルプ濃度を３．０％に調節し、実験室ディ
スクリファイナ−により、ろ水度３５０ ｎｉｌ、ｅｓ
ｆまて叩解を行った。なお、叩解前のパルプのろ水度は
６００ ｍ ｌ、ｃｓｆであッｔ、。・−８（７） ハ
／Ｌ ｆ 試料Ｉｆ、 ００部に対し”こ、ア、−、オ
ン性ポ１１”クリル）“ミド（スター−ガムＡ１５、星
光化学社製）Ｇｏ、３部、カチオン澱粉（）ｒ・イ［・
Ｆ１玉了ナショたル社製）を２．０部、およびアル４ｉ
Ｘルリデン・ダ・イマーザイズ剤（バーコン１１．−２
、−Ｆイ・ソクーハーギ：ｓ、 ｌ／λ社製）を０．４
部添加し、坪量］、 ８０ ｇ ｉ”ｄの手ずきシーｌ
−を作製Ｉ、７た５、なお、シー トの乾燥条件は１０
０°（ｒで１０分間とした。
Ｌ−（Ｄ シＦを、濃度３％のポリビニルｒルコール水
溶液でタブサイズ処理（１、スーパーカレンダーで平滑
化処理をした後、表面には二酸化チタン１０％を含む低
密度ポリエチｌノンを、裏面には低密度ポリエチ１５／
ンを、それぞれ３２ ｔｔ ｍの厚さに、樹脂温度３２
０度の条件で押しだし５塗工し、写真用支持体を得た。
この試料を、試料１−〜−−１と４゛る。
比較例１
実施例１で、ボリアミドルポリ）′ミンーエピク１１１
１１フル１−ドリン樹脂を、叩解前のパルプスラリーで
はなく、叩解後のパルプスレ・リ−に添加する以外は、
すべて同一・の方法で写真用支持体を得た１、この試寥
」を、試料１−２とする３、
［」乙較例ニジ
実施例１において、ポリアミド−ポリアミン丁ビクしフ
ルヒドリン樹脂の代わりにカチオン性ポリｊクリルアミ
ド（ＤＳＲ，１２５６、アラ、イドコロイド社製）を０
．５０部添加する以外は、すベ−ご同一・の方法で写真
用支持体を得た。この試料を、試料１、〜３とする。
実施例２
実施例１と同一の未叩解パルプに、ポリアミドポリアミ
ンーゴピクロルヒドリン樹脂を有効成分としこ、０．０
５．０．１０．１．００．３゜００、および４．００％
のＦ）水準に変化させ添加後、パルプ濃度を３．０％に
調節し、それぞれのパルプを実験室ディスクリファイナ
−でろ水度が２００ｍ１．ｃｓｆになるまで叩解を行っ
た。これらの叩解パルプ試料を用い、実施例１と同一の
方法で写真用支持体を得た。これらの試料をポリアミド
−ポリアミン−エピクロルヒドリン樹脂の添加量の少な
いものから順に試料２−１、試料２２、試料２−３、試
料２−４、および試料２５とする。
以上の結果をまとめて第１表に示す。
比較例３
実施例１の叩解前のパルプをろ水度２００ｍ ｌ。
ｃｓｆまで叩解し、その他の薬品を添加後、最後にポリ
アミド−ポリアミン−エピクロルヒドリン樹脂を、０．
０５．０．１０．１．００．３，００、および４．００
％の５水準に変化させ添加する以外は、実施例１と同一
の方法で写真用支持体を得た。これらの試料を、ポリア
ミド−ポリアミン−エピクロルヒドリン樹脂の添加量が
少ないものから順に、試料２−６、試料２−７、試料２
８、試料２−９、および試料２−１０とする。
これらの結果を第２表に示す。
（以下余白）
第２表
第１表および第２表の表面粗さとは、ＪＩＳＢＯ６０１
に準拠し、触針式粗さ計を用い、測定長さ２． ５ｍ、
ｍ、カットオフ値０．８ｍｍの条件で測定した写真用支
持体表面の中心線平均粗さ（μｍ）の値である。また、
外観とは、平滑性の視覚評価結果であり、平滑性の最も
良いものをＡ、最も劣るものをＤとしている。写真用支
持体としては、表面粗さ０．２０μｍ以下、外観Ｃ以上
（Ａ、、ＢＳＣ）が必要である。
試料１−１と試料１−３の比較から、平滑性のすぐれた
写真用支持体を得るためには、叩解前のパルプに、ポリ
アクリルアミドのような乾燥紙力増強剤を添加したので
は全く効果がなく、本発明のようにポリアミド−ポリア
ミン−エピクロルヒドリン樹脂を添加することにより目
的の達せられることか明かである。
試料２−１〜試料２−５と試料２−６〜試料２−１−０
の比較から、ポリアミド−ポリアミン−エピクロルヒド
リン樹脂の添加量を変化させた場合においても、叩解前
のパルプに添加することにより、すくれた平滑性の得ら
れることが明かである。
さらに、ポリアミド−ポリアミン−エピクロルヒドリン
樹脂の添加量か、パルプに対する重量パーセントで０．
１以上、３． ０以下の範囲がとくに添加量に対する
平滑性向上効果の点で好ましいことも明かである。
【発明の効果】
以上から、本発明の写真用支持体すなわち、パルプスラ
リーにポリアミド−ポリアミン−エピクロルヒドリン樹
脂を添加した後、叩解し得た原紙の両面を、ポリオレフ
ィン樹脂で被覆することにより製造した写真用支持体は
、
すぐれた平滑性を
有することが明かである。[Examples] Hereinafter, the present invention will be explained in detail with reference to Examples. 7. Note that the present invention is not limited to the examples. The parts and percentages listed below are based on weight. Example 1 100 ff1K of mixed pulp with a weight ratio of L B K [3 and N [based SP of 7:3] was added with boria de boriamin-yu bichlorohydrin resin (Kymen 5259, manufactured by Dick Harkish/S Co., Ltd.). The active ingredient and (, rO, 50
% addition, the pulp concentration was adjusted to 3.0%, and the freeness was adjusted to 350 nil, es using a laboratory disc refiner.
f) Beating was performed. The freeness of the pulp before beating is 600 ml, csf.・-8(7) Ha/L f Sample If, 00 parts "K, A, -, Onic Po11" Kryl) Mid (Star Gum A15, manufactured by Seiko Kagaku Co., Ltd.) Go, 3 parts, cation Starch ()r・i[・
2.0 parts of F1 (manufactured by National Corporation), and Al 4i
X-luridene da imazize agent (Burcon 11.-2
, -F Lee Seokhagi: s, manufactured by l/λ Company) is 0.4
[Basic weight], 80 g i”d handmade seal
- was prepared by I, 7 and 5, and the sheet drying conditions were 10
0° (r for 10 minutes. L-(D) was treated with a polyvinyl alcohol aqueous solution with a concentration of 3% to tab size (1. After smoothing with a super calender, the surface was coated with 10% titanium dioxide. Low density polyethylene 15/15 on the back side.
each to a thickness of 32 tt m at a resin temperature of 32 ttm.
It was extruded at 0 degrees and coated 5 times to obtain a photographic support. This sample is called sample 1--1. Comparative Example 1 In Example 1, Boriamiddlepoly)'min-epic 111
Except that the 11-ful 1-drine resin was added to the pulp slurry after beating, rather than to the pulp slurry before beating.
All photographic supports were obtained by the same method. 1. This trial was designated as sample 1-2. 0 of cationic polyj acrylamide (DSR, 1256, ARA, manufactured by Idocolloid Co., Ltd.)
．． A photographic support was obtained in the same manner as above, except that 50 parts were added. These samples will be referred to as samples 1 to 3. Example 2 Polyamide polyamine-gopichlorohydrin resin was added as an active ingredient to the same unbeaten pulp as in Example 1, and 0.0
5.0.10.1.00.3゜00, and 4.00%
F) After addition, the pulp concentration was adjusted to 3.0%, and each pulp was refined in a laboratory disc refiner to a freeness of 200 ml. Beating was performed until it became csf. Using these beaten pulp samples, a photographic support was obtained in the same manner as in Example 1. These samples are designated as Sample 2-1, Sample 22, Sample 2-3, Sample 2-4, and Sample 25 in descending order of the amount of polyamide-polyamine-epichlorohydrin resin added. The above results are summarized in Table 1. Comparative Example 3 The pulp of Example 1 before beating was prepared to have a freeness of 200 ml. After beating to csf and adding other chemicals, finally polyamide-polyamine-epichlorohydrin resin was added to 0.csf.
05.0.10.1.00.3,00, and 4.00
A photographic support was obtained in the same manner as in Example 1, except that the additives were added at different levels of 5%. These samples were divided into Sample 2-6, Sample 2-7, and Sample 2 in descending order of the amount of polyamide-polyamine-epichlorohydrin resin added.
8, sample 2-9, and sample 2-10. These results are shown in Table 2. (Margins below) Table 2 The surface roughness in Tables 1 and 2 is based on JISBO601
In accordance with the above, using a stylus type roughness meter, the measurement length was 2. 5m,
m is the value of the centerline average roughness (μm) of the surface of a photographic support measured under the condition of a cutoff value of 0.8 mm. Also,
Appearance is a visual evaluation result of smoothness, with the best smoothness being rated A and the worst smoothness being D. A photographic support must have a surface roughness of 0.20 μm or less and an appearance of C or higher (A, BSC). Comparison of Sample 1-1 and Sample 1-3 shows that in order to obtain a photographic support with excellent smoothness, it is necessary to add a dry paper strength agent such as polyacrylamide to the pulp before beating. It is clear that there is no effect and that the objective can be achieved by adding polyamide-polyamine-epichlorohydrin resin as in the present invention. Sample 2-1 to sample 2-5 and sample 2-6 to sample 2-1-0
From the comparison, it is clear that even when the amount of polyamide-polyamine-epichlorohydrin resin added is varied, smoothness can be obtained by adding it to the pulp before beating. Furthermore, the amount of polyamide-polyamine-epichlorohydrin resin added is 0.0% by weight relative to the pulp.
1 or more, 3. It is also clear that a range of 0 or less is particularly preferable in terms of the effect of improving smoothness depending on the amount added. Effects of the Invention From the above, the photographic support of the present invention, that is, a photograph produced by adding a polyamide-polyamine-epichlorohydrin resin to a pulp slurry and then coating both sides of a beaten base paper with a polyolefin resin. It is clear that the support has excellent smoothness.
Claims (1)
真用支持体において、前記原紙として、パルプスラリー
にポリアミド−ポリアミン−エピクロルヒドリン樹脂を
添加した後、叩解して製造した原紙を使用することを特
徴とする写真用支持体。 ２、叩解前のパルプスラリーに添加するポリアミド−ポ
リアミン−エピクロルヒドリン樹脂の添加量が、パルプ
に対する重量パーセントで０．１以上、３．０以下であ
ることを特徴とする請求項１記載の写真用支持体。[Claims] 1. In a photographic support in which both sides of a base paper are coated with a polyolefin resin, the base paper used is a base paper produced by adding a polyamide-polyamine-epichlorohydrin resin to a pulp slurry and then beating the mixture. A photographic support characterized by: 2. The photographic support according to claim 1, wherein the amount of the polyamide-polyamine-epichlorohydrin resin added to the pulp slurry before beating is 0.1 or more and 3.0 or less in weight percent relative to the pulp. body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11455790A JP2763378B2 (en) | 1990-04-26 | 1990-04-26 | Photographic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11455790A JP2763378B2 (en) | 1990-04-26 | 1990-04-26 | Photographic support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH049838A true JPH049838A (en) | 1992-01-14 |
| JP2763378B2 JP2763378B2 (en) | 1998-06-11 |
Family
ID=14640789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11455790A Expired - Lifetime JP2763378B2 (en) | 1990-04-26 | 1990-04-26 | Photographic support |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2763378B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5708406A (en) * | 1995-03-20 | 1998-01-13 | Asmo Co. Ltd. | Rotary actuator |
-
1990
- 1990-04-26 JP JP11455790A patent/JP2763378B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5708406A (en) * | 1995-03-20 | 1998-01-13 | Asmo Co. Ltd. | Rotary actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2763378B2 (en) | 1998-06-11 |
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